English explanations

In this post, I present a list of French words which have no satisfactory
rhyme (aka. orphan rhymes). I computed it from the Lexique database and curated it manually to fix
errors and omissions in the DB and exclude some words (and added some from the French
Wikipedia).

Of course, this list is not definite, since there is no clear definition of
the boundaries of the French language, and no clear definition of what
constitutes an acceptable rhyme. For this list, I excluded exotic-sounding
foreign borrowings and slang terms, and required rhymes to match up to the last
vowel phoneme (exactly, including the "brin"/"brun" distinction), to respect
rhyme gender, and forbid rhymes between derived terms (ie. terms with a common
etymological suffix, conjugations of the same verb, singular and plural
forms...).

I did not expect this list to be so long, and to include so many reasonably
common terms, but here you are... Preparing the list was a very nice occasion to
learn about a lot of weird-sounding rare words; I provide links to the French
Wiktionary if you want to learn more about some words (but I didn't check if all
those pages actually exist). Thanks to Ted for his help in cleaning up the
list. See also my list of
non-homophonous homographs in French and my list of ambiguous
verbal forms in French.